UNLABELLED This article presents general principles and a sample case of application of digital subtraction of x-rays for objective evaluation of results of treatment in dentistry. PURPOSE Evaluation of the results of surgical periodontal treatment by means of digital subtraction of radiographic images taken before and 12 month after surgery. MATERIAL AND METHODS For evaluation of the resul...

Four patients with infective endocarditis were examined by digital subtraction angiography immediately before operation. In three a root abscess was suspected and the remaining patient was believed to have a false aneurysm at an infected aortic cannulation site. In all the cases digital subtraction angiography showed the structure in several projections and confirmed the presence of a cavity. S...

Health technology The authors studied contrast-enhanced magnetic resonance angiography (MRA) and digital subtraction angiography (DSA). MR images were obtained using a 1.5-T MR scanner (Signa CV/I, GE Healthcare) with a torso phased-array coil. Digital subtraction images were obtained using a 38-cm field of view and an image matrix of 1,024 x 1,024 pixels (Integris V3000, Philips Medical System...